text: class ConfigSchema(object):
      """
      ConfigSchema is a placeholder type.  Any time that it appears in documentation, it means
      that any of the following types are acceptable:
  
      #. A Python scalar type that resolves to a Dagster config type
         (:py:class:`~python:int`, :py:class:`~python:float`, :py:class:`~python:bool`,
         or :py:class:`~python:str`
  
         e.g. `@solid(config_schema=int)` or `@solid(config_schema=str)`
  
      #. Built-in python collections such as :py:class:`~python:list`, or :py:class:`~python:dict`).
         `list` is exactly equivalent to `Array[Any]` and `dict` is equivalent to `Permissive()`
  
         e.g. `@solid(config_schema=list)` or `@solid(config_schema=dict)`
  
      #. A Dagster config type: :py:data:`~dagster.Int`, :py:data:`~dagster.IntSource`,
         :py:data:`~dagster.Float`, :py:data:`~dagster.Bool`, :py:data:`~dagster.String`,
         :py:data:`~dagster.StringSource`, :py:data:`~dagster.Any`, :py:class:`~dagster.Array`,
         :py:data:`~dagster.Noneable`, :py:data:`~dagster.Enum`, :py:class:`~dagster.Selector`,
         :py:class:`~dagster.Shape`, or :py:class:`~dagster.Permissive`.
  
      #. A bare python dictionary, which will be automatically wrapped in
         :py:class:`~dagster.Shape`. Values of the dictionary are resolved recursively
         according to the same rules. E.g.
  
          * ``{'some_config': str}`` is equivalent to ``Shape({'some_config: str})``.
  
          * ``{'some_config1': {'some_config2': str}}`` is equivalent to
            ``Shape({'some_config1: Shape({'some_config2: str})})``.
  
      #. A bare python list of length one, whose single element will be wrapped in a
         :py:class:`~dagster.Array` is resolved recursively according to the same
         rules. E.g.
  
          * ``[str]`` is equivalent to ``Array[str]``.
  
          * ``[[str]]`` is equivalent to ``Array[Array[str]]``.
  
          * ``[{'some_config': str}]`` is equivalent to ``Array(Shape({'some_config: str}))``.
  
      #. An instance of :py:class:`~dagster.Field`.
      """
  
      def __init__(self):
          raise NotImplementedError(
              "ConfigSchema is a placeholder type and should not be instantiated."
          )
  